Raschig Rings, Metal Raschig Rings, SS Raschig Rings, Plastic Raschig Rings, Carbon Raschig Rings, Graphite Raschig Rings, Gujarat, India.

Raschig Rings

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Raschig Rings

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Raschig rings are named after their inventor, the German chemist Friedrich Raschig. Raschig rings are pieces of tube, approximately equal in length and diameter. They are used in large numbers as a packed bed within columns for distillations and other chemical engineering processes. They provide a large surface area within the volume of the column for interaction between liquid and gas vapours.

USE

Raschig Ring enabled Raschig to perform distillations of much greater efficiency than his competitors using fractional distillation columns with trays.

In a distillation column, the reflux or condensed vapour runs down the column, covering the surfaces of the rings, while vapour from the reboiler goes up the column. As the vapour and liquid pass each other countercurrently in a small space, they tend towards equilibrium. Thus, less volatile material tends to go downwards, and more volatile material upwards.

They are also used for devices where gas and liquid are put in contact for purposes of gas absorption, stripping or chemical reaction, and as a support for bio-films in biological reactors.

Raschig rings made from borosilicate glass are sometimes employed in the handling of nuclear materials, where they are used inside vessels and tanks containing solutions of fissile material, for example solutions of enriched Uranyl nitrate, acting as neutron absorbers and preventing a potential criticality accident.

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